Victron Energy Skylla-i Battery Charger (24V, 80A & 100A)

Victron Energy Skylla-i Battery Charger — Intelligent 24V Multi-Bank Charging for Marine and Off-Grid Systems

The Victron Skylla-i is a professional-grade 24V charger for complex battery systems, combining smart charging, a rugged marine build, and exceptional configuration flexibility. This listing covers the 24/80 (80A) and 24/100 (100A) models, each available in a (1+1) or (3) output configuration — ideal for marine, industrial, and off-grid systems where reliable power and careful battery management matter.

Skylla-i (1+1): dual-output charging

The (1+1) model has two isolated outputs: a full-rated primary output for the main house bank, plus a limited 4 A secondary output at slightly lower voltage to keep a starter battery topped up.

Skylla-i (3): triple-output charging

The (3) model has three isolated outputs and charges three separate banks at once. Each output can supply the full rated current, while the combined output is capped at the charger's rating (80 A total on the 24/80, 100 A total on the 24/100), intelligently shared across the connected banks. Note: two-output and three-output models cannot be paralleled with each other.

Key features

• Rugged construction: Aluminium housing (blue RAL 5012) with epoxy powder coating, stainless-steel hardware, and a drip shield for resistance to heat, humidity, and salt air. Circuit boards are acrylic-coated for added corrosion protection.

• Battery temperature protection: Sensors keep power components within limits, reducing output under extreme temperatures.

• Flexible configuration: Set up via VE.Can (NMEA 2000), a rotary switch, DIP switches, and onboard potentiometers.

• Parallel synchronisation: Like-model chargers can be paralleled and synchronised over RJ45 UTP cables for higher output.

• BatterySafe mode: Prevents damage from excessive gassing during high-voltage charging.

• Variable absorption time: Automatically adjusts to depth of discharge to prevent overcharging.

• Storage mode: Reduces float voltage when batteries sit idle, prolonging lifespan and cutting maintenance.

• Temperature compensation: Adjusts charge voltage with battery temperature to extend battery life (sensor included).

• Voltage sense: Compensates for cable loss so the battery receives the correct charge voltage.

• AC & DC input: Accepts both AC mains (230 VAC) and a DC supply (180–350 VDC) for AC-DC or DC-DC operation.

• Power supply mode: Stable output lets it work as a standalone DC power supply.

• LiFePO₄ (Li-Ion) ready: Integrates with lithium systems via the remote on/off port or full control over the galvanically isolated VE.Can port.

Typical applications

• Marine vessels with multiple battery banks

• Off-grid and backup power systems

• Commercial and industrial equipment

• Lithium (LiFePO₄) BMS-controlled charging

Technical snapshot

• Models: 24/80 (80 A) and 24/100 (100 A), each in (1+1) or (3) output configuration

• Output: 24 V nominal; (1+1) = full-rated + 4 A isolated starter; (3) = three isolated outputs sharing the full rated current (80 A or 100 A total)

• Charge algorithm: 7-stage adaptive (lead-acid) + 3-stage LiFePO₄

• Charge voltages: absorption 28.8 V, float 27.6 V, storage 26.4 V

• Recommended bank size: 400–800 Ah (24/80), 500–1000 Ah (24/100)

• AC input: 230 VAC (range 185–265 V), 45–65 Hz, PF ≈ 0.98; max AC input 16 A (24/80) / 20 A (24/100) @ 180 VAC

• DC input: 180–350 VDC

• Operating temp: −20 to +60 °C (full output up to 40 °C; reduces to 80% at 50 °C and 60% at 60 °C)

• Protection: reverse-polarity (fuse), output short-circuit, over-temperature; forced cooling

• Interfaces: VE.Can (NMEA 2000), galvanically isolated, two RJ45 connectors; remote on/off; alarm relay (DPST, 240 VAC/4 A)

• Sensing: battery temperature sensor (included) + voltage-sense leads

• Connections & build: M8 battery bolts; AC screw-clamp up to 10 mm² (AWG 7); IP21 aluminium enclosure

• Size & weight: 405 × 250 × 150 mm (16.0 × 9.9 × 5.9 in), 7 kg (16 lb)

• Warranty: 5-year manufacturer's warranty

For professional multi-bank charging that adapts to your system's exact needs, the Skylla-i pairs precision and reliability with serious marine-grade build quality. Blue Marine tip: connect the Skylla-i to a Victron GX device over VE.Can for full system monitoring, and add a SmartShunt or BMV for accurate state-of-charge — a strong foundation for lithium conversions and hybrid shore/generator setups.